Ambiguity function analysis of wideband radars

A brief background and justification of the wideband ambiguity function is provided, and an expression is derived for the ambiguity function for a fairly broad class of coherent wideband radars. The class of radars described includes those utilizing pulse-to-pulse frequency agility, phase-shift coding, and discrete Fourier transform processing. The ambiguity function is reduced to one which is more suitable for computer calculation, and the implementation of a procedure for computing the ambiguity function at any point in the ambiguity plane is described. Two wideband ambiguity function examples computed using this procedure are presented, illustrating distortions due to wideband effects. The method can be used for analysis of various radar approaches, including phase-shift and frequency coding, when surveillance requirements lead to waveforms with large time-bandwidth products